Just gave 0.1.4.1 a try and... it is beyond catastrophic. I made a simple rocket with a SRB, a fairing and probe with ion engines, an antenna and 4 solar arrays.
- VAB is more fluid than before, but I even wont mention VAB controls and interface ...
- Rocket explode spontaneously upon loading
- Antenna considered as blocked, though on the edge of the craft
- Upon fairing deployment, rocket bends and probe spins like crazy, ending by an explosion. Time warping does not stop the disassembly, sometimes even leaving the craft torn and krakenized with parts misplaced
- Time warp stops acceleration of the craft (ion engines on)
- Game decided to consider that the craft could not be controlled anymore, batteries not charging, etc. (debris bug)
Messed around with planes too, and although being less unsuffurable, it is just stupidly not enjoyable (bugs, misbehaviors, etc.)
Not optimistic at all for the next update, and the whole development of the game... but too late for a refund.